Oil-burner.



No. 807,392. PATENTBD DEC. 12, 1905.

M. MARTIN.

OIL BURNER.

APPLICATION rum) JULY 22, 1902.

2 sums-an 1.

1 I dfirra w. W v I PATENTED DEC. 12, 1905.

M. MARTIN.

OIL BURNER.

APPLICATION rum) JULY 22, 1903.

2 SHEETS--SHEET 2.

'gle valve.

UNITED STATES PATENT OFFICE.

MORRIS MARTIN, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO CLARENCE E. CLISBEE, OF REVERE, MASSACHUSETTS.

OI L-BU R N E R Specification of Letters Patent. Patented Dec. 12, 1905.

Application filed July 22,1903. Serial No. 166,542.

To all whom, it may concern:

Be it known that I, MORRIS MARTIN, a citizen of the United States, residing at Malden, in the-county of Middlesex and State of Massachusetts, have invented an Improvement in Oil-Burners, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

This invention relates to an oil-burner having an atomizer which delivers oil in the form of a spray, and its accessories. These oilburners as heretofore constructed have usually included a steam-generating coil which is situated in the path of the spray from the burner, and in order to start the burner it has been necessary either to kindle a fire under the steam-generating coil in order to convert the water therein into steam, which upon escaping through the atomizer will start the flow of oil, and thus continue the operation of the burner, or it has been necessary to start the atomizer by forcing air through the latter by means of a hand-pump or some auxiliary device. Both of these operations involve considerable labor and time.

It is one of the objects of my present invention to so construct the burner and its accessories that the starting of the burner may be accomplished by the manipulation of a sin- This is accomplished by connecting the steam-generating coil of the atomizer to a water-tank at a point below the top of the tank, so that when the valve in the supply pipe leading to the tank is opened and water delivered to said tank the air in the tank is first compressed and as the tank fills is forced through the steam-generating coil to thus start the atomizer. After the tank has been filled to a level above the connection between have also provided a novel means for control-v ling the admission of Water to the tank, so that the water-level in said tank remains approximately stationary.

Another object of my invention is to provide a novel construction of atomizer which may be readily cleaned; and another object is to so construct the burner that while the steam-generating coil is in the combustionchamber the atomizer itself is outside of the combustion-chamber,and therefore is not subjected to the extreme heat generated in said chamber. This arrangement is especially important, because it prevents the atomizer from becoming carbonized.

In the drawings, Figure 1 is a view showing the general arrangement of the burner and its accessories. Fig. 2 is a detail of the valveoperating mechanism. Fig. 3 is a plan view of the atomizer and steamgenerating coil, said view showing a portion of the wall of the combustion-chamber. Fig. i is a view of the parts shown in Fig. 3 looking to the left. Fig. 5 is a detail hereinafter described. Fig. 6 is an end view of the atomizer with the adjusting-nozzle removed. Fig. 7 is a longitudinal sectional view of the atomizer.

The burner is adapted to be used in heating any combustion-chamber, whether it be a stove, range, furnace, &c.

In Fig. 1 I have illustrated a portion of the combustion-chamber in outline and designated it by 3. Situated inside of the combustionchamber is asteam-generating coil 4, one leg 5 of which is connected to an atomizer, (designated generally by 6,) and the other leg 18 of which is connected, by means of a suitable pipe 19, with a Water-supply tank 20. The atomizer is situated outside of the combustionchamber and is directed toward an opening 7 in the wall thereof.

One of the important features of my invention is the construction which permits the atomizer to be placed on the outside of the combustion-chamber, for with this construction the atomizer itself is protected from the heat generated in the combustion-chamber. Where The form of atomizer herein illustrated comprises the body portion 6, having a steam-duct 8 therethrough, which communicates with a suitable connection 9, connected with the leg 5 of the water-coil, and an oil-duct 10, which communicates with a suitable source of oilsupply 12 by means of a pipe 11. The oiltank 12 will preferably be so positioned with relation to the atomizer that the level of the oil in the pipe 11 will stand about as shown in Fig. 7that is, above the lower end of a suction-tube 13, which forms. the communication between the pipe 11 and the oil-duct 10. Screw-threaded on the end of the body is an adjusting-nozzle 14, having a spray-aperture 15, which is in line with the steam-duct 8.

The end of the body is shown as being conical in shape, and the interior of the nozzle 14 is similarly shaped, so that by screwing the nozzle hard onto the body the oil-duct 10 may be closed. Said nozzle also furnishes a means for regulating the relative amount of oil and steam which is delivered to the'combustionchamber. The oil and steam ducts 10 and 8 extend parallel to each other completely through the body and are closed at the righthand end, Fig. 7, by means of a removable cap 16. This construction I regard as very important, because by removing the cap 16 access may be had to the ducts for the purpose of cleaning them. The pipe 19 opens into the chamber 20 at a point considerably below the upper part thereof, so that the end of said pipe is not covered by water until the tank is partially filled. The tank is supplied with water through any suitable supply-pipe 21, which will be connected to the city-main or any other permanent source of supply, said pipe 21 being controlled by a suitable handoperated valve 22. 23 designates a dischargepipe connected to the lower part of the tank, which is controlled by a suitable valve 24. With this construction it will be seen that when the valve 22 is opened to admit water to the empty tank 20 the air in said tank becomes compressed as the tank fills with water and is forced out through the pipe 19 and steam-generating coil 8 into the steam-duct of theatomizer, the force of the air thus issuing through the atomizer being suflicient to draw the oil through the suction-tube 13 and duct 10, and thus start the atomizer in operation. Upon igniting the oil-spray as it is delivered to the combustion-chamber the coil 4 becomes gradually heated, so that by the time the level of the water in the tank 20 has reached the lower end of the pipe 19 the said coil is hot valve is again opened.

eration and continue so long as the water is supplied to the tank 20. When the valve 22 is closed, the atomizer will cease its operation as soon as the water already in the coil 4 has been entirely converted into steam.

I have provided means for automatically controlling the supply of water to the tank, so that water will only be admitted as it is used therefrom. For this purpose I have illustrated the pipe 21 as having a valve 25 therein, which is automatically controlled by apressure-regulator 26, of any improved pattern, connected to the tank 20. The pressure-regulator and connections between the same and valve 25 are such that when the pressure in the tank increases beyond a certain point the valve 25 is closed; but when said pressure falls below a certain point said It will be understood, of course, that a body of air is confined in the upper portion of the tank 20, which is compressed by the water in the tank, and in case more water is admitted to the tank than is used the pressure in the tank increases and the valve 20 is closed.

30 designates a suitable gage by means of which the pressure in the tank may be observed.

It will be understood, of course, that the valve 24 must be closed when the valve 22 is opened, and I have illustrated said valves as being so connected that they will operate simultaneously but in reverse directions. Any suitable means for accomplishing this may be used. I have herein illustrated each valve as havinga gear-wheel 31 connected to the stem thereof and a shaft 32 as having at its upper end a gear meshing with the gear on the stem of valve 22 and at its lower end a gear which is connected to the gear on the valve 24 through an idler 29, so that when the valve 22 is opened the valve 24 will be closed, and vice versa.

The atomizer and the coil 5 are both supported from the side wall of the combustionchamber, and I have provided a novel form of detachable coupling between the pipes 9 and 19 and the legs of the coil. Such coupling is illustrated in Fig. 5, from which it will be seen that one of the legs 5 of the coil has a screw-thread connection with a bushing or sleeve 40, which has a nipple 41, extending through the wall of the combustion-chamher, said bushing being clamped to the wall by means of a clamping-nut 42. The bushing is made with a shoulder 43, which engages the wall of the casing and which is held tight against said casing by the nut 42. Screw-threaded on the end of the nipple is a sleeve 44, having a conical seat 45, in which the conical end of the connection 9 or 19 seats, said connection being held against the sleeve 43 by an ordinary union 46. With this construction either of the pipes 9 or 19 may be readily disconnected from the corre IIO sponding leg of the coil, and the coil may also be readily removed. The connection L0 is such that the coil is rigidly but detachably supported by the wallof the casing. This construction also affords a means for detachably'supporting the atomizer and its connection 9 from the wall of the combustion-chamber but exterior thereto.

50 designates a suitable petcock, which when opened permits the steam and water in the coil to blow out.

I will preferably provide the pipe 19 with a valve 51.

While I have herein shown a steam-generating chamber in the nature of a coil, yet I do not wish to be limited to this construction,

as it is obvious that other forms of steam-gen erating chambers can be used without departing from the invention.

From the above it will be seen that I have provided a system which is entirely automatic in the operation of starting the burner and in the control of the water to the steamgenerating coil, and also a type of burner which is very easy to keep clean.

While I have illustrated one form in which my invention may be embodied, I do not wish to be limited to the construction shown, as various changes may be made in the construction of the different parts without departing from the invention as expressed in the appended claims.

Having described my invention, what I claim, and desire to secure by Letters Patent,

1. In adevice of the class described, an atom- .izer connected'to a source of oil-supply, a

steam-generating chamber connected with the atomizer and situated to be heated by the flame issuing therefrom, a closed tank, a conduit leading to said steam-generating chamber, and opening into the tank at a point above its bottom, and an inlet-pipe to admit water to the tank under pressure whereby when water is admitted to the tank the air is forced out of the tank through the atomizer to start the same, and subsequently water is delivered to the heated chamber.

2. In a device of the class described, an atomizer connected to a source of oil-supply, and a steam-gen erating coil connected to the atomizer and also to a water-tank at a point below the top thereof, said coil being in the path of 1 thereto, a water-tank, connections between the same at a point below the top thereof and the atomizer, and means to deliver water under pressure to said tank, whereby the atomizer is started in operation by the air which is forced through the latter by the water which is delivered to the empty tank, and when the water-level in. said tank reaches the level of the connection between said tank and atomizer and water is forced into the generatingcoil the operation of the atomizer is continued by the steam thus generated.

4. In a device of the class described, an atomizer connected to a source of oil-supply, a steam-generating chamber connected to the atomizer and situated to be heated by the flame issuing therefrom, a closed water-tank having an inlet, connections between the tank and the steam-generating chamber, the outlet from said tank being between the top and bottom thereof whereby as the tank fills with water, the air in the tank is forced through the atomizer until the water in the tank rises to the level of the outlet, and means to automatically control the supply of water to the tank.

5. In adevice of the class described, an atomizer connected to a source of oil-supply, a steam-generating chamber connected to the atomizer, a closed water-tank, connections between the chamber and the tank at a point between the top and bottom of the tank whereby as water is admitted to the tank the air therein is forced through the atomizer until the level of the water reaches the outlet, and means governed by the pressure in the tank to control the supply of water to said tank whereby water is fed to said tank only as fast as it is used therefrom.

6. In a device of the class described, a combustion-chamber, a steam-generating coil inclosed within said chamber, said coil having both legs terminating at the wall of said chamber, means to detachably secure said legs to the wall, a source of water-supply communicating with one of the legs, an atomizer situated outside of the combustion-chamber, and means to detachably connect the other leg of said coil to said atomizer whereby said atomizer and coil are both secured to and supported by the wall of the combustion-chamber.

7 In a device of the class described, an atomizer connected to a source of oil-supply, a steam-generating chamber connected to the atomizer and situated to be heated by the flame issuing therefrom, a closed water-tank, connections between said tank and the steamgenerating chamber, the outlet from the tank being below the top thereof whereby an airchamber exists at the upper portion of the tank, and an automatic valve operated by variations of pressure in the tank to control the supply of water to' said tank.

8. In an oil-burner, an'atomizer comprising a body having oil and steam ducts extending from one end thereof-to the other and conl nected intermediate of their ends with sources l V of oil and steam supply respectively, a cap removably supported on said body and serving as a means to close one end of both said ducts.

9. In an oil-burner, an atomizer comprising a body having oil and steam ducts extending from one end thereof to the other, and connected with sources of oil and steam supply respectively, a cap removably supported on 1 

